Build your own dream machine with this Intel D865GBF Socket 478 ATX Motherboard Geek Kit™! This Geek Kit™ includes Pentium 4 2.53GHz CPU, 512 MB DDR RAM and Heat Sink & Fan. Perfect for those who want to upgrade or build a system from the ground up! Featuring the Intel 865G chipset, this Intel D865GBF Socket 478 ATX Motherboard supports up to 4 GB DDR memory and 400/533/800 MHz system bus. Intel Graphics Extreme 2 controller and Flex 6 audio subsystem using the Analog Devices AD1985 codec provides exceptional graphics and audio performance! Set up a fast network with the onboard Intel 82547EI 10/100/1000 Gigabit Ethernet and add high speed SATA hard drives with two SATA controllers. An AGP slot, six PCI slots and four 184-pin DIMM sockets are provided for custom system configuration and future add-in card upgrades! Eight USB 2.0 ports delivers high speed data transfers up to 40 times the performance of USB 1.1.